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341
The domestic challenges facing Saudi Arabia. (c2007)
منشور في 2007احصل على النص الكامل
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masterThesis -
342
Power System Transient Stability Assessment Based on Machine Learning Algorithms and Grid Topology
منشور في 2023"…In the case of the test sample, accuracy of instability classification for XGBoost was 91.5%, while that for Random Forest was 81.6%. The accuracy of algorithms increased by 10.9% and 1.5%, respectively, when the topology of the power system was taken into account.…"
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article -
343
Evaluation of Workability and Structuration Rate of Locally Developed 3D Printing Concrete Using Conventional Methods
منشور في 2022"…However, for printed specimens, the compressive strength decreased with the increase in a/b ratio due to increased thixotropy. …"
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article -
344
The role of objectively recorded smartphone usage and personality traits in sleep quality
منشور في 2023"…<h3>Purpose</h3><p dir="ltr">The proliferation of smartphones, accompanied by internet facilities, has contributed to a decrease in sleep quality over the last decades. It has been revealed that excessive internet usage impacts the physical and mental health of smartphone users, while personality traits (PT) could play a role in developing internet addictions and preventing their negative effects. …"
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345
Shear performance of FRP Reinforced Deep Beams Made of Ultra High Performance Concrete (UHPC)
منشور في 2023احصل على النص الكامل
doctoralThesis -
346
Optimum sizing of steam turbines for concentrated solar power plants
منشور في 2012"…For capacity sizes of 10kWe up to 50MWe, the steam turbine efficiency increases and the steam turbine expected specific capital cost of the power block decreases at a high rate, whereas for larger sizes they remain almost constant. …"
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article -
347
A comprehensive design and rating study of evaporative coolers and condensers. Part II. Sensitivity analysis
منشور في 2020"…For evaporative condenser design, it was seen that, for a 53% increase in the inlet relative humidity, the normalized sensitivity of the surface area increased 1.8 times in value and, for a 15 8C increase in the condenser temperature, the sensitivity increased by 3.5 times. …"
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article -
348
Economics of hydrogen production and liquefaction by geothermal energy
منشور في 2012"…Also, capital costs for the models involving hydrogen liquefaction are greater than those for the models involving hydrogen production only.…"
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article -
349
Channel Network Control on Seasonal Lake Area Dynamics in Arctic Deltas
منشور في 2020"…We find that monthly shrinkage rates have a pronounced structured variability around the channel network with the shrinkage rate systematically decreasing farther away from the channels. This pattern of shrinkage is predominantly attributed to a deeper active layer enhancing near-surface connectivity and storage and greater vegetation density closer to the channels leading to increased evapotranspiration rates. …"
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350
The impact of maternal care on child development
منشور في 2019"…Studying heterogeneous effects reveals a differential impact by child's age. An increase of 6.5 h per week in the time 2-year-olds spend with their mothers significantly improves their non-cognitive skills.…"
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احصل على النص الكامل
احصل على النص الكامل
article -
351
How FIFA World Cup 2022™ can meet the carbon neutral commitments and the United Nations 2030 Agenda for Sustainable Development?: Reflections from the tree nursery project in Qatar...
منشور في 2023"…The i-Tree assessment tool and a well-established US database are used in this regard to undertake a correlation climatic condition analysis between Doha and five locations in the United States with similar demographics as the State of Qatar. …"
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352
Dynamic Cyber Resilience of Interdependent Critical Information Infrastructures
منشور في 2021"…The technology stack was also enhanced with three new algorithms and five protocols. The proposed solution was optimized using the iterative four-objective cycle based on previous primary phase results. …"
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353
How does varying the number of personas affect user perceptions and behavior? Challenging the ‘small personas’ hypothesis!
منشور في 2022"…Investigating this matter, thirty-seven participants interacted with five and fifteen personas using an interactive persona system, choosing one persona to design for. …"
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354
Environmental enrichment and cafeteria diet attenuate the response to chronic variable stress in rats
منشور في 2015"…Results showed an increase in intra-abdominal fat associated with the CAF diet and an increase in body weight gain associated with both the CAF diet and EE. …"
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article -
355
Thermo-economic analysis of an integrated solar power generation system using nanofluids
منشور في 2017"…It is seen that the maximum increase in the annual energy output of the ISRRC caused by the addition of Cu nanoparticles to Syltherm 800 is approximately 3.1%, while the maximum increase in the net savings is about 2.4%.…"
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article -
356
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357
CEO gender and managerial entrenchment
منشور في 2020"…We find that the presence of female CEO decreases the turnover-performance sensitivity, increases the E-index, and inflates CEO compensation. …"
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احصل على النص الكامل
article -
358
Elastic Buckling Behavior of Functionally Graded Material Thin Skew Plates with Circular Openings
منشور في 2024"…The critical buckling load is also dependent on the power index, as an increase in the power index from 0.2 to 5 reduced the buckling load by 1698 kN. …"
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article -
359
Effect of Flexural NSM-FRP Bars on the Shear Strength of Reinforced Concrete Beams
منشور في 2019احصل على النص الكامل
doctoralThesis -
360
The rising danger of heat waves
منشور في 2015"…The model, which is based on daily meteorological data from 2000 to 2012, suggests that at least 87% of Qatari infants under 4 years of age, as well as more than 86% of elderly people and 80% of the general population could be exposed to hazardous heat wave events at least once in the next five years. According to the model, heat waves are most likely to occur in Qatar’s northern coastal region, largely because of increased humidity and temperature as a result of air pollution from expansion of the oil and gas industries. …"